Lepidocrocite

lepidocrocite

pyrite

goethite

Formula: Fe3+O(OH)
Hydroxide, paramorph of goethite
Specific gravity: 4.05 to 4.13
Hardness: 5
Streak: Orange
Colour: Deep red, red-brown
Common impurities: Mn
Environments:

Sedimentary environments

Lepidocrocite is common in iron ore deposits as a weathering or oxidation product of other iron-bearing minerals, as a precipitate from ground water and in marine manganese nodules. Associated minerals include goethite and pyrite (HOM).

Localities

The type locality is Zlaté Hory, Jeseník District, Olomouc Region, Czech Republic.

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